<template>
    <div id="root">
    <div class="todo-container">
        <div class="todo-wrap">
            <MyHeader :addTodo='addTodo'/>
            <MyList :todos='todos' :checkTodo='checkTodo'  :deleteTodo='deleteTodo'/>
            <MyFooter :todos='todos'  :checkAllTodo = 'checkAllTodo'  :clearAllTodo='clearAllTodo'/>
        </div>
    </div>
    </div>
</template>

<script>
    import MyHeader from './components/MyHeader.vue'
    import MyList from './components/MyList.vue'
    import MyFooter from './components/MyFooter.vue'


    export default {
        name:'APP',
        components:{
            MyHeader,
            MyList,
            MyFooter   
        },
        data(){
            return {
                todos:[
                    {id:'001',title:'学习',done:true},
                    {id:'002',title:'健身',done:false},
                    {id:'003',title:'旅游',done:true}
                ]
            }
        },
        methods: {
            // 添加一个todo
            addTodo(todoObj){
                // console.log('我是APP组件，我收到了数据:',x)
                this.todos.unshift(todoObj);
            },
            // 勾选or取消勾选一个todo
            checkTodo(id){
                this.todos.forEach((todo)=>{
                    if(todo.id === id) todo.done = !todo.done
                })
            },
            // 删除一个todo
            deleteTodo(id){
                this.todos=this.todos.filter(todo => todo.id !== id)
            },
            // 全选or取消全选
            checkAllTodo(done){
                this.todos.forEach((todo)=>{todo.done = done})
            },

            // 清楚所有已完成的todo
            clearAllTodo(){
                this.todos = this.todos.filter((todo)=>{return !todo.done})
            }
        },
}
</script>

<style>
    /*base*/
    body {
        background: #fff;
    }

    .btn {
        display: inline-block;
        padding: 4px 12px;
        margin-bottom: 0;
        font-size: 14px;
        line-height: 20px;
        text-align: center;
        vertical-align: middle;
        cursor: pointer;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
        border-radius: 4px;
    }

    .btn-danger {
        color: #fff;
        background-color: #da4f49;
        border: 1px solid #bd362f;
    }

    .btn-danger:hover {
        color: #fff;
        background-color: #bd362f;
    }

    .btn:focus {
        outline: none;
    }

    .todo-container {
        width: 600px;
        margin: 0 auto;
    }
    .todo-container .todo-wrap {
        padding: 10px;
        border: 1px solid #ddd;
        border-radius: 5px;
    }
</style>
